ES2161325T3 - Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul. - Google Patents

Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.

Info

Publication number
ES2161325T3
ES2161325T3 ES96201205T ES96201205T ES2161325T3 ES 2161325 T3 ES2161325 T3 ES 2161325T3 ES 96201205 T ES96201205 T ES 96201205T ES 96201205 T ES96201205 T ES 96201205T ES 2161325 T3 ES2161325 T3 ES 2161325T3
Authority
ES
Spain
Prior art keywords
gray scale
pixel
blue noise
scale image
noise mask
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES96201205T
Other languages
English (en)
Spanish (es)
Inventor
Kevin J Parker
Theophano Mitsa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Research Corp Technologies Inc
Original Assignee
Research Corp Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24492766&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2161325(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Research Corp Technologies Inc filed Critical Research Corp Technologies Inc
Application granted granted Critical
Publication of ES2161325T3 publication Critical patent/ES2161325T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4084—Scaling of whole images or parts thereof, e.g. expanding or contracting in the transform domain, e.g. fast Fourier transform [FFT] domain scaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/40075—Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/4105—Bandwidth or redundancy reduction for halftone screened pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Holo Graphy (AREA)
ES96201205T 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul. Expired - Lifetime ES2161325T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/622,056 US5111310A (en) 1990-12-04 1990-12-04 Method and apparatus for halftone rendering of a gray scale image using a blue noise mask

Publications (1)

Publication Number Publication Date
ES2161325T3 true ES2161325T3 (es) 2001-12-01

Family

ID=24492766

Family Applications (3)

Application Number Title Priority Date Filing Date
ES92901101T Expired - Lifetime ES2081270T3 (es) 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.
ES96201205T Expired - Lifetime ES2161325T3 (es) 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.
ES96201206T Expired - Lifetime ES2146832T3 (es) 1990-12-04 1991-12-03 Matriz dither para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES92901101T Expired - Lifetime ES2081270T3 (es) 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES96201206T Expired - Lifetime ES2146832T3 (es) 1990-12-04 1991-12-03 Matriz dither para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.

Country Status (10)

Country Link
US (1) US5111310A (ja)
EP (4) EP0749231B1 (ja)
JP (1) JP2622429B2 (ja)
AT (3) ATE203134T1 (ja)
AU (1) AU9088491A (ja)
CA (1) CA2097508C (ja)
DE (4) DE560872T1 (ja)
ES (3) ES2081270T3 (ja)
IE (3) IE914190A1 (ja)
WO (1) WO1992010905A1 (ja)

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DE560872T1 (de) 1996-02-15
EP0749232A1 (en) 1996-12-18
ATE203134T1 (de) 2001-07-15
EP0749231A1 (en) 1996-12-18
DE69132658D1 (de) 2001-08-16
EP0560872A1 (en) 1993-09-22
EP0749231B1 (en) 2001-07-11
EP0749232B1 (en) 2000-04-05
DE69132353D1 (de) 2000-09-07
JPH06508007A (ja) 1994-09-08
DE69132353T2 (de) 2001-01-18
DE69132104D1 (de) 2000-05-11
DE69132658T2 (de) 2001-11-15
ATE191594T1 (de) 2000-04-15
ATE195206T1 (de) 2000-08-15
ES2081270T1 (es) 1996-03-01
IE20000938A1 (en) 2001-03-21
ES2146832T3 (es) 2000-08-16
ES2081270T3 (es) 2000-12-16
CA2097508C (en) 2002-02-12
US5111310A (en) 1992-05-05
EP0560872B1 (en) 2000-08-02
EP0746142A1 (en) 1996-12-04
WO1992010905A1 (en) 1992-06-25
IE20000314A1 (en) 2000-11-01
AU9088491A (en) 1992-07-08
EP0560872A4 (en) 1993-11-03
DE69132104T2 (de) 2000-08-24
IE914190A1 (en) 1992-06-17
JP2622429B2 (ja) 1997-06-18
CA2097508A1 (en) 1992-06-05

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